Start, Test, Monitor, and Stop a Bridge

Operate a bridge during rehearsal and air using status, test captions, cloud connection, XPression connections, latency, and payload preview.

Written By 4ALL.LIVE

Last updated 12 days ago

Operate a bridge during rehearsal and air using status, test captions, cloud connection, XPression connections, latency, and payload preview.

Best for: XPression operators, graphics engineers, caption operators, broadcast engineers, production IT, and licensed desktop administrators.

Before you start

Requires an active 4All organization/event, authorized desktop account, eligible XPression Bridge license, supported app build, and a network path to 4All plus the selected XPression protocol.

  • Document the 4All event/language and XPression scene/DataLinq design.
  • Know the bridge/XPression machines, IP interfaces, protocol, direction, port, firewall owner, and final program return.
  • Prepare a backup output and an off-air test scene.

Step by step

  1. Open Status/Outputs. Confirm output ID/name, event, language, protocol, bind/port.
  2. Start disabled/off-air. Verify no unintended destination.
  3. Run test captions. Validate network, parser, mapping, rolling, clear, and scene.
  4. Stop test script. Confirm no test text remains.
  5. Confirm 4All event live. Cloud connected and last caption updates.
  6. Start production output. On cue.
  7. Monitor. Running, cloudConnected, xpressionConnections, lastCaptionAt, seq, latencyMs, roll lag, last error, local URLs, payload preview.
  8. Compare final program. Bridge status is not final proof.
  9. Stop on cue. Confirm connection/output and XPression scene clear/hold.
  10. Preserve logs. Incident timeline.

What success looks like: The Bridge transports the correct 4All caption state to the intended XPression scene with verified formatting, timing, monitoring, and recovery.

Check your setup

  • Test and live captions reach the intended scene; operators can identify cloud versus XPression failure and stop cleanly.

Troubleshooting

Cloud connected, no XPression

Check protocol/host/port/firewall/DataLinq.

XPression connected, no live text

Check event live/language/source/reducer.

Latency grows

Inspect network, source provider, roll speed/lag, polling, and scene updates.

Security and operational notes

  • Test captions can go on air if scene is live.
  • Closing window may leave tray output running.
  • Always monitor program return.

Documentation status: Draft based on XPression Bridge repository version 0.1.59. Validate the installed release, supported OS, license policy, and live graphics workflow before publishing.